<s>
I	B-Application
Made	I-Application
a	I-Application
Game	I-Application
with	I-Application
Zombies	I-Application
in	I-Application
It	I-Application
!	I-Application
</s>
<s>
!	O
1	O
)	O
,	O
is	O
a	O
zombie-themed	O
multidirectional	O
shooter	O
video	O
game	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
,	O
available	O
through	O
the	O
Xbox	B-Device
Live	I-Device
Indie	I-Device
Games	I-Device
service	O
.	O
</s>
<s>
Released	O
in	O
2009	O
,	O
it	O
was	O
developed	O
by	O
Ska	O
Studios	O
and	O
was	O
designed	O
entirely	O
by	O
company	O
founder	O
James	O
Silva	O
,	O
previously	O
best	O
known	O
for	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
game	O
The	B-Application
Dishwasher	I-Application
:	I-Application
Dead	I-Application
Samurai	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
using	O
Microsoft	B-Device
XNA	I-Device
,	O
though	O
its	O
tongue-in-cheek	O
description	O
claims	O
it	O
was	O
made	O
using	O
"	O
Hypermagic	O
Engine	O
3.0	O
and	O
the	O
Megacore	O
X	O
parallelization	O
processor.	O
"	O
</s>
<s>
Using	O
two	O
analog	B-Device
sticks	I-Device
,	O
the	O
players	O
shoot	O
droves	O
of	O
attacking	O
zombies	B-Application
while	O
collecting	O
power-ups	O
,	O
with	O
the	O
objective	O
of	O
surviving	O
until	O
the	O
game	O
's	O
background	O
song	O
ends	O
.	O
</s>
<s>
Silva	O
said	O
Xbox	B-Operating_System
Live	O
's	O
indie	O
game	O
price	O
point	O
inspired	O
him	O
to	O
make	O
"	O
a	O
$1	O
experience	O
that	O
delivers.	O
"	O
</s>
<s>
The	O
game	O
was	O
ranked	O
2009	O
's	O
most	O
popular	O
Xbox	B-Operating_System
Live	O
Indie	O
Game	O
based	O
on	O
connectivity	O
.	O
</s>
<s>
It	O
sold	O
160,000	O
copies	O
by	O
January	O
2010	O
,	O
making	O
it	O
the	O
top-selling	O
Xbox	B-Operating_System
Live	O
Indie	O
Game	O
by	O
more	O
than	O
40,000	O
units	O
.	O
</s>
<s>
Zombies	B-Application
went	O
on	O
to	O
sell	O
200,000	O
copies	O
by	O
March	O
2010	O
and	O
jumped	O
to	O
308,000	O
in	O
sales	O
by	O
August	O
2010	O
making	O
Silva	O
roughly	O
$	O
215,000	O
after	O
Microsoft	O
's	O
30	O
percent	O
revenue	O
fee	O
.	O
</s>
<s>
I	B-Application
Made	I-Application
a	I-Application
Game	I-Application
with	I-Application
Zombies	I-Application
in	I-Application
It	I-Application
!	I-Application
</s>
